<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
	/* 弹出对话框提醒 */
	alert("JavaScript你好！");
	/* 直接在页面进行书写，文档对象型 */
	document.write("JavaScript你好啊！");
</script>
</head>
<body>

</body>
</html>